sfr		ISP_CONTR	=	0xe7;
void isp_delay( unsigned int i ) using 1
          {
           while( i-- > 0);
          }
void isp_init(void)
{
     IP = 0x10;
	 IE = 0x90;
	 TMOD = 0x20;
	 TL1 = 0xfd;
	 TH1 = 0xfd;
	 SCON = 0xd8;
	 PCON = 0x00;
	 TR1 = 1;
	 EA=1;
}
void isp_seria() interrupt 4 using 1{   
     EA=0;RI=0;TR1=0;     	 
     isp_delay(50000);  
	 isp_delay(50000);  
     ISP_CONTR	=	0x60;    
}